How to use 'Multiple Starts' setting in the Time & Frequency Analyzer
Written by Dylan Perez
Updated at January 2nd, 2026
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The ‘Multiple Starts’ setting in the Time & Frequency Analyzer (TFA) is new with MokuOS 4.1. The TFA works by calculating the interval between a start and stop event. By default, the TFA will timestamp the first ‘start’ event, and calculate the interval to the ‘stop’ event. In some experiments, there may be multiple start events before a stop event and the ‘multiple starts’ setting will give more flexibility in choosing the interval to measure.
‘Use First’ Setting
The ‘Use First’ setting will calculate the interval between the first start event and the stop event. In this example, the blue channel will be the ‘start’ events and the red channel will be the ‘stop’ events.
Between each stop event there are 3 start events. The time between the first ‘start’ event and the ‘stop’ event is ~20 µs.
By configuring the TFA with the ‘Use First’ setting, the TFA will report the ~20 µs interval.
‘Use Last’ Setting
Using the same setup, the ‘Use last’ setting is applied. This interval is ~6.6 µs.
By configuring the TFA with the ‘Use last’ setting, the TFA will report this interval.
